Stringer, the Manhattan Borough President, was running unchallenged before Spitzer made an 11th-hour decision to run last month. Spitzer has been leading Stringer in the polls, but a Siena College poll on Monday revealed that 59 percent of New Yorkers view him unfavorably.

Spitzer, who is self-funding his campaign, tried to paint himself as an independent and Stringer as a product of the political establishment. Meanwhile, Stringer continued to slam Spitzer for his past.

"I may not be the celebrity candidate," Stringer said. "But I have never embarrassed my constituents, not for one minute, and I never will."